Forum Discussion
Grit_dog
Nov 04, 2021Navigator
SweetLou wrote:Cummins12V98 wrote:
No Idea on a Ford. On my 11 and now 15 RAM every single start I hit the Tow Haul and Exhaust Brake buttons.
I did that too thinking it helps with the longevity of the exhaust brake. My actuator went out at 90K this year.
Your actuator went out, but the vanes didn’t clog up and stick, correct?
2 different things.
I never believed that a vgt needed to run the exhaust brake as the vanes are basically constantly moving anyway. However I was corrected and it makes sense.
When accelerating, the vanes range of motion is much less as they never “close down” to choke off the exhaust. Whereas the exh brake moves the vanes through the rest of their total range of motion because it reduces the % open much more than a base line, no boost condition.
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